Free solar energy for generating power using photovoltaics

As renewable energy systems have become more widespread, consumers and end users have become increasingly keen to generate their own electricity. Today, an efficient photovoltaic system offers the opportunity to make profitable use of free solar energy. By installing photovoltaic modules, users demonstrate their responsible attitude towards the environment, and make an active contribution towards protecting the climate by reducing CO2 emissions.

With energy costs constantly rising, a photovoltaic system helps users save money and reduces their dependence on energy suppliers. The power they generate can be used for their own needs or exported to the public grid. Thanks to statutory remuneration and savings resulting from on-site consumption, the investment pays for itself in just a few years. A photovoltaic system also increases the value of the property.

On the following pages you will find comprehensive information on the Viessmann photovoltaic system and the perfectly matching components available. These include photovoltaic modules, inverters, assembly systems, power storage systems and heat pumps to help you consume more of your own power on site.

The high quality provided by the photovoltaic modules ensures economic efficiency and a long service life. Comprehensive services from planning and sizing through to delivery and servicing complete the photovoltaic offer provided by Viessmann's professional trade partners.

How does photovoltaics work?

A photovoltaic system consists of several modules, which in turn are composed of solar cells. In this smallest unit, sunlight is converted into electrical energy via the photoelectric effect. The light causes certain charge carriers to dissolve. The movement of these particles generates electrical energy. The prerequisite for this is the semiconductor material silicon. There are two types of solar cells: monocrystalline and polycrystalline cells. Due to the different manufacturing methods, they differ in their product properties. Which solar cells you ultimately choose depends on a number of factors and should be weighed up well in advance. In addition to the efficiency and the desired output, the location of use is also decisive. In any case, the Vitovolt 300 modules offer various options for installation and areas of application. Among other things, they are suitable for detached and semi-detached houses, but also for commercial buildings.

Brief overview of the construction of a solar system with photovoltaics

In addition to the solar cells, photovoltaic systems consist of an inverter, the lines and, above all, the power consumers. These can be not only electrical devices, but power storage devices as well as the connection to the public grid for feeding. The solar inverter is necessary because direct current is generated in the solar cells, which is not taken in the household. Therefore, this must be converted into alternating current.

Benefit from the advantages of Viessmann photovoltaic systems

With the increasing spread of regenerative energy systems, the willingness of consumers and end users to produce electricity themselves is also growing. Today, an efficient photovoltaic system offers the possibility to use the free solar energy profitably. By installing photovoltaic modules, the operator signals his responsible action for the environment and makes an active contribution to climate protection by avoiding CO₂ emissions.

With energy costs constantly rising, a photovoltaic system helps to save money and additionally reduces dependence on energy suppliers. The self-produced electricity can be used for own consumption or fed into the public grid. Due to the legally regulated compensation or the savings through self-consumption, the investment pays off after only a few years. In any case, this is associated with an increase in the value of the property.

Viessmann photovoltaic technology offers you perfectly matched components consisting of photovoltaic modules, inverters and mounting systems, as well as power storage systems and heat pumps to increase your own power consumption.

The high quality standard of the photovoltaic modules ensures cost-effectiveness and durability. Comprehensive services from planning and design to delivery and service by competent Viessmann specialist partners round off the photovoltaic range.

Efficient self-consumption of solar power

Owners of photovoltaic systems currently have two options for utilizing the electricity generated: The electricity can either be fed into the grid in its entirety or used partially or completely by the company itself. Since self-generated solar electricity is more cost-effective than electricity purchased from the grid, self-consumption offers financial advantages. An optimal system concept in conjunction with perfectly matched components ensures this high level of self-consumption.

Effizienter Eigenverbrauch von Solarstrom

Efficient on-site consumption of solar power

Since generating solar power on-site is cheaper than drawing power from the grid, on-site consumption offers financial advantages. An optimised system concept with perfectly matched components ensures this high level of on-site consumption.

[1] Photovoltaic system
[2] Photovoltaic inverter
[3] Photovoltaic meter
[4] Consumers
[5] Heat pump meter
[6] Heat pump with Vitotronic 200 (type WO1C)
[7] Consumption and export/generation meter
[8] Public grid

Complete solution: combine photovoltaic system with heat pump

The most efficient way of generating electrical heat is the heat pump. Here, up to four kilowatt hours of heat are generated from one kilowatt hour of electricity using free environmental heat. If the energy demand for room heating and domestic hot water is covered with the help of a heat pump, not only can the self-consumption rate of the solar power system be significantly increased, but the more cost-effective solar power also enables an inexpensive heat supply. If you want to combine a photovoltaic system with a heat pump, you should specifically choose a heat pump that optimizes self-consumption and can adapt its operation to the generation of the photovoltaic system. Viessmann has developed an appropriately matched system of photovoltaic system and heat pump for this application.
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Power storage systems - Consumption of generated power on site for higher efficiency

Viessmann power storage systems increase consumption on site of the energy you generate and improve the efficiency of the photovoltaic system. The system will charge the power storage unit when the home is not calling for power. When needed, this power can be used to operate electrical appliances, for example. If the power storage unit is fully charged and no consumers are connected, excess power will be exported into the grid and remunerated accordingly.